Paper-making machine.



J. A. WHITE.

PAPER MAKING MACHINE.

APPLICATION FILED JUNE 7, 1909.

941,968. Patented Nov. 30, 1909.

2 SHEETS-SHEET 1 J, A. WHITE;

PAPER MAKING MACHINE.

APPLICATION FILED JUNE 1909 Patented Nov. 30, 1909.

2 SHEETS-SHEET :2. I

i? i i (UN all} will h Uh ii lENll (lFBIL/E.-

JOSEPH A. WHITE. E'i'LILADfii. S1 i'i-"ANIA, ASSIGNORTU- THE MOORE VJHITE COMP-ANY. Oi PlllLADliLPI-IIA, PENNSYLVANIA. A CORlOB-ATLON OF PENN SYLVANIA. i l 1 Daren-Maxine MACHINE.

*utcnted Nov. 30, 1909. Application filed June 7, 1909.: Serial No. 500,631

Specification of Letters Patent.

To all ur/zom it may concern: a suction box 1)", which tends to clean it and Be it known that l, Josnrir A. \Yrurn. a citizen of the United States, residing in The Philadelphia, Pennsylvania, have invented the upper press roll around the certain .lii'iprovcments in lapei li'laking Madrying machine. chines, of which lhe following is a specification.

My invention relates to certain improvements in the delivery end of a paper making machine, and the object of the invention is to provide a suction device for lifting the paper oil of the making screen or cylinder, prior to its delivery to the press rolls, and i0 subject that surface of the paper that was in contact with the screen to the action of the bare press l'Oll,*SO as to ohlitcrale the wire marking. This object ll. attain in the following manner, reference being had to the accompanying drawings, in whicht- Figure 1, is a side view of one end 01" a, Fourdrinicr pa per making machine illustrating my invention; 2, is a View illustrating a lll()(llfi(fllill()il; and Fig. 3, a sec- ,tional' View of the revolving suction box illustrated in Fig.

A is the frame of a Fcuirdrinier machine. a is the screen which passes lhrough the entire length of the machine and arounda single couch roll 13 in the present instance, which is mounted in the bearing Z) at the rear end of the frame. l A, A are the usual suction boxes and l (1/, a are the deckles. l, C are press rolls mounted in hearings l c, c on the :lirame of the machine, and 1] is the endless :Fcli which passes a round rollers d, a, one on each side of a suction box I) mounted above the lower roll B and taking 1 the place of the ordinary upper couch roll. I This suction box can be of any ordinary type common in paper making machines, and is so located as to create a suction as ll e paper passes under it, causing the paper to draw off from, the screen a, the paper adhering] s 'iciently to the felt (I that it is carried by i it around the roller (Z? The felt after it} ieaves the roller d passes around-rheroller (Z While the paper separated from the felt cl and passes around a roller 6, then both l l l paper pa=ses from the upper portion of roll 0 to the Ihe upper couch roll and place a suction box on the upper side of lhe screen a, so to draw the alter out of the paper, in place of squeezing it by means of the two couch rolls, and to lift the. paper oil the screen so that it will more readily pass from the screen and to prevent the marking of the paper by the wire screen a. The paper then passes with the felt between the two press rolls C-C'. it will be noticed that the feltis between the press roll C and the paper, but the paper is in directcontact Willi the bare press roll C. The surface of the paper that D the making screen a, so that after the paper passes betucen the press rolls the wire marking is obliterated.

The suction box D, shown in Fig. 1, is a fixed suction box, but. I may substitute for it a revolving suction box D illustrated in Figs. 2 and This revolving suction box D? has trunnions wvhich are mounted in bearings f of the trame A and it consists of I a shell- 5 having perforations g, and. mounted within the shell is the fixed suction sectionG' pressed down onto. the lower portion of the shell by springs 9 which are carried by a fixed frame so that While the shell rprolves the suction box remains stationary was in contactwith.

around With the shell. In this instance the two guide rolls (Z, (Z are dispensed with as the rotating suction shell takes their place.

While my invention is particularly adapted for use in connection with a Fourclrinier machine, it wili be understood that it can be used in connection with a circular, paper making 1nachinhm'herc the paper is formed on a cylinder. lathis instance 1 mount the suction box so as lift lhe paper oi? the surface of the cylinder,or if the screen is used, in this instance oilthe screen, the particular idea being to utilize a suction box for the purpose of removing paper from the paper forming apparatus whether it he a screen, i'olt, or a perforated cylindl-ir.

The combination in a paper making ma.- chine of a frame, a couch roll at the rear pass between the two press rolls (3, G. The i'elt leavesthe press roll first, passing around rho ordinary guide rollers cl and around a jtension roll (Z the position. of this roll hell: regulated by the usual tension apparatu I This felt after it leaves the press rolls passes lly the above comjlrucl ion l dispense with.

is in contact with this roll is the surface that,

and the paper and the feltjd. are carried remove any particles of fiber adhering to it.

end of thefrnme, :1 making screen adapted to pass around the couch roll, a sue-tionbo'xmounted on the upper side of thesciteen before-it passes around the couch 1-011 and by which the paper is lifted 031 the screen, an

endless belt. mounted above the screen and adapted to pass under the suction box, press rolls between which the papenand the felt pass, guides or 'directing the paper from the conch will to the press roll, the snrface of the paper that was in contact with the 5 two suhsm'ibing witnesses.

JUnldPH A. WHITE.

Vvitnesses WM. Sucre,

tn. A. BAR! 

